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Butanolide alleviated cadmium stress by improving plant growth, photosynthetic parameters and antioxidant defense system of brassica oleracea

文献类型： 外文期刊

作者： Shah, Anis Ali 1 ; Khan, Waheed Ullah 2 ; Yasin, Nasim Ahmad 3 ; Akram, Waheed 4 ; Ahmad, Aqeel 4 ; Abbas, Muhammad 5 ;

作者机构： 1.Univ Narowal, Dept Bot, Narowal, Pakistan

2.Univ Punjab, Coll Earth & Environm Sci, Lahore, Pakistan

3.Univ Punjab, RO II, SSG, Lahore, Pakistan

4.Guangdong Acad Agr Sci, Guangdong Key Lab New Technol Res Vegetables, Guangzhou 510640, Peoples R China

5.Univ Punjab, Dept Microbiol & Mol Genet, Lahore, Pakistan

6.Univ Sargodha, Dept Bot, Sargodha, Pakistan

7.Natl Agr Res Ctr, Islamabad, Pakistan

关键词： Antioxidant; Brassica oleracea; Cd; KAR1

期刊名称：CHEMOSPHERE （ 影响因子：7.086； 五年影响因子：6.956 ）

ISSN： 0045-6535

年卷期： 2020 年 261 卷

页码：

收录情况： SCI

摘要： Current study was performed to explore the effect of butanolide (KARL) in mitigation of cadmium (Cd) induced toxicity in Brussels sprout (Brassica oleracea L.). Brussels sprout seeds, treated with 10-5 M, 10-7 M and 10-10 M solution of KARL were allowed to grow in Cd-contaminated (5 mg L-1) regimes for 25 d. Cadmium toxicity decreased seed germination and growth in B. oleracea seedlings. Elevated intensity of electrolyte leakage (EL), malondialdehyde (MDA) and hydrogen peroxide (H2O2) were observed in Cd-stressed seedlings. Additionally, reduced level of stomatal conductivity, transpiration rate, photosynthesis rate, intercellular carbon dioxide concentration, and leaf relative water content (LRWC) was also observed in Cd-stressed seedlings. Nevertheless, KARL improved seed germination, seedling growth and biomass production in Cd stressed plants. KARL application showed elevated LRWC, osmotic potential, and higher membranous stability index (MSI) in seedlings under Cd regime. Furthermore, seedlings developed by KARL treatment exhibited higher stomatal conductivity, and intercellular carbon dioxide concentration together with improved rate of transpiration and photosynthetic rate in B. oleracea under Cd stress. These findings elucidate that the reduced level of MDA, EL and H2O2, as well as improvement in antioxidative machinery increased growth and alleviated Cd toxicity in KARL treated seedlings under Cd stress. (C) 2020 Elsevier Ltd. All rights reserved.

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